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Return the id and shift of the code with the minimum bit error #21

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Return the id and shift of the code with the minimum bit error #21

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13 changes: 8 additions & 5 deletions src/stag/Decoder.cpp
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#include "stag/Decoder.h"

#include <climits>
#include <stdexcept>
#include <fstream>
#include <string>
Expand Down Expand Up @@ -43,14 +44,16 @@ Decoder::Decoder(int hd) {
}

bool Decoder::decode(const Codeword& c, int errCorr, int& id, int& shift) {
int bestError = INT_MAX;
for (unsigned int i = 0; i < codewords.size(); i++) {
Codeword xorResult = c ^ codewords[i]; // XOR
const Codeword xorResult = c ^ codewords[i]; // XOR
const int error = xorResult.count();

if (xorResult.count() <= errCorr) {
if ((error <= errCorr) && (error < bestError)) {
id = i % noOfCodewords;
shift = i / noOfCodewords;
return true;
bestError = error;
}
}
return false;
}
return (bestError != INT_MAX);
}